[WAGON-186] SFTP deploy causes NullPointerException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0-alpha-6
• Component/s: wagon-ssh
• Environment: Windows XP, Maven 2 Final
• Assignee: Brett Porter
• Reporter: Kenneth Baltz
• Created: 27/Oct/05 19:27
• Updated: 14/May/08 02:36
• Resolved: 04/Jan/06 04:58

Description

I'm new to M2, so this may be user error, but even still, I think a more useful error message would be appropriate.

I'm trying to deploy my project to an internal Remote Repository using SCP or SFTP (SCP fails with the "session is down" message, so I'm trying SFTP). I get the attached trace during my build. I'm not exactly sure what metadata it's hoping to find.

flexo is the name of the server.

Uploading: sftp://flexo/export/home/kcbaltz/testM2Repo/com/copart/core/core/1.0-SNAPSHOT/core-1.0-20051028.001955-1.jar
[INFO] Retrieving previous metadata from flexo
[INFO] -------------------------------------------------------------------------
—
[ERROR] FATAL ERROR
[INFO] -------------------------------------------------------------------------
—
[INFO] null
[INFO] -------------------------------------------------------------------------
—
[INFO] Trace
java.lang.NullPointerException
at org.apache.maven.wagon.observers.ChecksumObserver.transferStarted(ChecksumObserver.java:65)
at org.apache.maven.wagon.events.TransferEventSupport.fireTransferStarted(TransferEventSupport.java:100)
at org.apache.maven.wagon.AbstractWagon.fireGetStarted(AbstractWagon.java:339)
at org.apache.maven.wagon.providers.ssh.SftpWagon.getIfNewer(SftpWagon.java:264)
at org.apache.maven.wagon.providers.ssh.SftpWagon.get(SftpWagon.java:302)
at org.apache.maven.artifact.manager.DefaultWagonManager.verifyChecksum(DefaultWagonManager.java:518)
at org.apache.maven.artifact.manager.DefaultWagonManager.getRemoteFile(DefaultWagonManager.java:404)
at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifactMetadata(DefaultWagonManager.java:295)
at org.apache.maven.artifact.repository.metadata.DefaultRepositoryMetadataManager.resolveAlways(DefaultRepositoryMetadataManager.java:334)
at org.apache.maven.artifact.repository.metadata.DefaultRepositoryMetadataManager.deploy(DefaultRepositoryMetadataManager.java:379)
at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:83)
at org.apache.maven.plugin.deploy.DeployMojo.execute(DeployMojo.java:148)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:399)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:469)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:448)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:301)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:268)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:113)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] -------------------------------------------------------------------------